What is another word for alvarezsaurid?
Pronunciation: [ˌalve͡əzsˈɔːɹɪd] (IPA) 
Alvarezsaurids are a group of theropod dinosaurs that were small in size and had short, robust forelimbs. Some synonyms for alvarezsaurid include the Alvarezsauridae family and the Alvarezsauriformes clade. These dinosaurs were first discovered in South America in the early 1990s and have since been found in China and Mongolia. They are believed to have roamed the Earth during the Late Jurassic and Early Cretaceous periods, between 160 and 100 million years ago. Alvarezsaurids are unique in their anatomy, including a delayed ossification of the cranium, a fused first metacarpal, and elongated pubes. As their fossils continue to be studied, researchers hope to learn more about the details of the alvarezsaurid's behavior and how it contributed to the evolution of theropod dinosaurs.
